Coupling and pipe packer



Oct. 13, J. A. PLANTE COUPLING YAND PIPE PACKER Filed.June 15, 1923 Patented ct. 13, 1925.

tl l S 'i' A JOSEPH A. PLANTE, 0F SAN PEDRO, CALIFORNIA.

COUPLING AND PIPE PGKEB.

Application filed .Tune 15, 1923.

To aZZ whom it may concern.'

Be it known that l, Josnrr-I A. PLANTE, a citizen of the United States, residing at San Pedro, in the county of Los Angeles and State ci California, have invented new and useful improvements in Coupling and Pipe Packers, of which the following is a speciv lisation.

rPhis invention relates to deep well shing tools, and has tor an object to provide an improved packing means whereby circulating iiuid can be `prevented from passing down around the outside of a drill pipe in a well hole and will be compelled to flow down in through the drill pipe in the well hole, and which is gripped oir engaged by the iishing tool parts.

My present invention is shown as incorporated with an oversho-t ishing tool which is adapted to run down over and encompass, for instance, a string of drill pipe, and my invention consists in means for making a packed joint between the ii'shing string and the drill pipe.

Other objects and advantages will be made manifest in the following specification of an embodiment of the invention illustrated in the accompanying drawings, wherein- Trligure l is a longitudinal section of the pacirer with the parts in preliminary position, before being set.

Pig. 2 is a longitudinal section showing the parts in the lowered position below the drill pipe coupling.

Pig. 3 is a sectional view showing the packer set on the coupling.

Por purposes of illustration, the present invention is shown `as combined with an overshot iishing tool having a barrel or shoe 2, with a suitable number oi' spring latches 3, arranged within the barrel and normally contracting so that the shoe is run down in a well and passes over and encompasses a drill pipe P, which may be built up ot sections connected by standard couplings C.

Frequently, it is desirable to t'orce a circulating medium down through the drill pipe P, and this circulation may be established through the tubular iishing string il, to which the barrel 2 is, in the present case, secured by an intermediate joint or coupling 5. The joint 5 has its lower end threaded at 6 into the barrel 2, and is provided with an internal, conical seat 7, upon which is laid a packing ring 10, which preferably is split and has overlapping end portions 1l Serial No. 645,578.

forming, therefore, an eXpansible ring which is adapted to slip down over the drill pipe couplings C until the packing passes below the coupling C which is to be grappled by the fishing tool.

ritter the spring hooks have been lowered to a. position below the desired coupling C, the iishing tool is then pulled upwardly until the springs 3 run up against the lower' shoulder ot the coupling C. The relation of the springs 3 to the packing l0 is such that when the springs 3 engage the coupling, the packing ring 10 will be disposed around the engaged coupling.

There may be interposed between the upper end oit the packing ring 10 and the fishing pipe 4 a retaining ring 12.

From the above it will be seen that the improved packer is adapted to be lowered down into the well and adjusted circumferentially about a coupling, or other suitable part, or the drill pipe or other pipe in the well, and then when pressure is introduced into the shing string 4L, it becomes effective upon the packing ring 10 to compress the saine between its conical seat 7 and the encircled coupling C, with the result that a substantially leak-prooi joint is formed about the coupling and between the fishing tool parts so that the pressure iuid in the iishing string is compelled to pass down inside or" the drill pipe P and thence upwardly outside of the string il.

l have therefore provided a novel method 'for providing for circulation through a drill or through pipe in a well by forming a packed joint between the drill pipe and a ishing tool string of pipe sections in which iiuid is subjected to pressure and must iiow down through the drill pipe or other encircled pipe and thence upwardly outside of the fishing string.

`Further embodiments, modiiications and variations may be resorted to within the principle of the invention.

l/'hat is claimed is: q

l. ji. coupling and pipe packer including a member having an interior packing seat, an erpansible split ring packer mounted upon the packing seat, and spring latches below the packing seat, the packing ring being adapted to encircle a part of a fish in a well and to expand to allow couplings to pass and the latches serving to locate a coupling in the seat so as to form a tight joint between the coupling and the packing.

2. A coupling and pipe packer including ratus has been lowered to the desired extent a member having an interior packing seat, the latches will engage under a coupling and a split ring packing mounted upon the packhold the coupling in the packing to Yforni a 10 ing- Seat, and latches below the packing so tight joint. 5 that the coupling and pipe packer may be In testimony whereof I have signed my passed downwardly over a string of pipe naine to this specification. and couplings and so that when the appa- JOSEPH A. PLANTE. 

